Development of A Mechanical Roof Breaker For Ground Control in Longwall Operations Under Massive Roof.
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Development of A Mechanical Roof Breaker For Ground Control in Longwall Operations Under Massive Roof.

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Published by s.n in S.l .
Written in English


Book details:

Edition Notes

1

SeriesReport of investigations (United States. Bureau of Mines) -- 8416
ContributionsTandanand, S.
ID Numbers
Open LibraryOL21738948M

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